PDB Statistics: PDB Data Distribution by Molecular Weight (Structure)

All macromolecules, small molecules, and ions are included, except for water molecules. Molecular weight is calculated for all atoms, including those not observed in the experiment. Molecular weight of all non-water atoms in the asymmetric unit.

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Molecular Weight (Daltons)Number of Entries
< 20K30253
20K - 40K42660
40K - 60K31301
60K - 80K19104
80K - 100K13293
100K - 120K9577
120K - 140K6328
140K - 160K4781
160K - 180K3974
180K - 200K2897
200K - 220K2286
220K - 240K1892
240K - 260K1413
260K - 280K1184
280K - 300K898
300K - 320K745
320K - 340K710
340K - 360K641
360K - 380K554
>= 380K7927